QE-520 is valid patch question create (#3631)

* QE-520 dev: isValidPatch op handler surveyUpdate (nothing to check)

* Added comment about what to do in later stage

* Added missing import of OpHandlerExceptionTrait

---------

Co-authored-by: pstelling <patricia.stelling@limesurvey.org>

application/libraries/Api/Command/V1/SurveyPatch/OpHandlerQuestionCreate.php

@@ -423,7 +423,9 @@ private function prepareAdvancedSettings(
      */
     public function isValidPatch(OpInterface $op): bool
     {
-        // TODO: Implement isValidPatch() method.
+        // check for existing tempId props in question,
+        // subquestion and/or answer when operation validation 2.0 is developed
+
         return true;
     }
 }